Install captchaclick service on your own server.
Install Captchaclick service: download captchaclick.rpm from here
yum -y install gd boost curl-devel fcgi
rpm -ivh captchaclick.rpm
After installation,directory "/usr/local/captchaclick" will created and files will be copied to this directory. start Captchaclick it by:
Add or remove pictures for the Captcha type 5: Select specfic pictures from pictures list(optional)
Captchaclick support picture content identification and you can customize pictures at your wish. There are many directoy at "/usr/local/captchaclick/imagelist". Every dir stores many pictures which are belong to specfic catalog. You can change the catalog name at file: readme under the dir.
If you have issues about how to install Captchaclick on your own server, you may reach us at @captchaclick